Gluing technology, gluing equipment and battery piece processing technology

Abstract

The invention relates to the field of photovoltaic cells, in particular to a gluing process, gluing equipment and a battery piece processing technology, the gluing process is applied to a battery piece, and the gluing process comprises the steps that gluing areas are preset, the gluing areas are located on the battery piece, the gluing areas are arranged in a straight line, and multiple groups of gluing areas are arranged in parallel; providing a colloid, wherein the colloid is conductive; the glue is made to be fluid, and the glue is distributed along the gluing area to form a glue film; the adhesive film is solid. The technical problem that welding equipment and the technology are complex is solved, and the technical effect of simplifying the machining technology is achieved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic cells, and in particular to a glue coating process, glue coating equipment and a cell processing process. Background Art

[0002] With the development of photovoltaic technology, in order to improve the power conversion rate of solar cells, processing equipment for solar cells has emerged.

[0003] In the prior art, battery cells are connected to each other through welding ribbons. First, the welding ribbons need to be welded on the flat battery cells. Therefore, the welding ribbons need to be arranged on the surface of the battery cells, and the welding between the welding ribbons and the battery cells is completed after heating and curing. The steps of welding the welding ribbons include pulling the welding ribbons, cutting the welding ribbons, transferring the welding ribbons, arranging and placing the welding ribbons, and welding process steps. The welding ribbons themselves are flexible and have a small diameter. After cutting, the welding ribbons are transferred and arranged between robots. Therefore, the robots that clamp the welding ribbons need to be provided with multiple groups of clamping structures to achieve clamping of multiple groups of welding ribbons, which makes the structure of the welding equipment and related processes bloated and complicated, and the cost is increased.

[0004] Therefore, the technical problem of the prior art is that the welding equipment and process are complicated. Summary of the invention

[0005] The present application provides a glue coating process, glue coating equipment and battery cell processing technology, which solve the technical problems of complex welding equipment and processes and achieve the technical effect of simplifying the processing technology.

[0006] In the first aspect, the present application provides a glue coating process, which adopts the following technical solution:

[0007] A glue coating process, applied to a battery cell, comprises: presetting a glue coating area, the glue coating area is located on the battery cell, the glue coating area is arranged in a straight line, and the glue coating area is provided in multiple groups and arranged in parallel; providing a colloid, the colloid is conductive; making the colloid a fluid, the colloid is arranged along the glue coating area to form a glue film; making the glue film a solid.

[0008] Preferably, the plurality of groups of glue coating areas are arranged parallel to each other and at equal intervals.

[0009] Preferably, the adhesive film is used for bonding with the welding strip, and the width of the adhesive film is less than or equal to the width of the welding strip.

[0010] Preferably, the “the colloid is arranged along the glue-coated area to form a glue film” includes: the colloid is screen-printed on the battery cell along the glue-coated area to form the glue film; the colloid is transferred onto the battery cell along the glue-coated area to form the glue film; the colloid is 3D-printed on the battery cell along the glue-coated area to form the glue film; or the colloid is sprayed on the battery cell along the glue-coated area to form the glue film.

[0011] Preferably, the “the colloid is transferred onto the battery cell along the glue-coated area to form the glue film” comprises: providing a carrier, the carrier having a transfer member, the transfer members are arranged in a straight line, the transfer members are provided in multiple groups and arranged in parallel, the transfer members are arranged corresponding to the glue-coated area; the transfer member has the colloid on it; the carrier is brought close to the battery cell so that the transfer member is in contact with the glue-coated area correspondingly.

[0012] In the second aspect, the present application provides a glue coating device, which adopts the following technical solution:

[0013] A glue coating device is used for coating glue on a battery cell. The battery cell has a glue coating area, which is arranged in a straight line. The glue coating area is provided with multiple groups and arranged in parallel. The glue coating device includes: a glue pool, which is used to store glue; a carrier, which includes: a base; a transfer member, which is connected to the base, and the transfer member has multiple groups arranged corresponding to the glue coating area, so that the colloid located on the transfer member can be transferred to the glue coating area.

[0014] Preferably, the transfer member is a convex strip having a transfer portion thereon, a plurality of the transfer portions are used to cooperate with the glue coating area so that the colloid is transferred to the glue coating area, and the plurality of the transfer portions are located in the first plane.

[0015] Preferably, it further comprises: a battery seat, wherein the battery seat is movable relative to the transfer member, the battery seat has a bearing surface, the bearing surface is used to bear the battery sheet, the bearing surface is located in a second plane, and the second plane is parallel to the first plane.

[0016] Preferably, the transfer member is a wire body, the base has at least two groups, the wire body is connected between the bases to form a wire mesh, and the wire mesh is used to cooperate with the glue coating area to transfer the colloid to the glue coating area.

[0017] Preferably, it further comprises: a battery seat, wherein the battery seat is movable relative to the transfer member, the battery seat has a bearing surface, the bearing surface is used to bear the battery sheet, and the bearing surface is configured as a plane or a convex arc surface.

[0018] Preferably, the glue pool has a groove body, the groove body is used to accommodate the colloid, at least part of the transfer member can enter the groove body to contact the colloid, wherein the depth of the groove body is less than the thickness of the transfer member.

[0019] Preferably, the trough body has an opening, the opening is located in the third plane, and the glue pool further comprises: a scraper, the scraper is used for scraping the glue, and the scraper has freedom of movement so that the scraper can scrape the colloid flat relative to the opening.

[0020] In a third aspect, the present application provides a battery cell processing technology, which adopts the following technical solution:

[0021] A battery cell processing technology comprises: after the battery cell is coated with glue by the above-mentioned glue coating process, the glue film is made sticky to bond the welding strip.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] The present application presets a glue coating area on the battery cell, arranges a colloid on the glue coating area and forms a glue film, and the soldering tape can be bonded with the glue film to connect the soldering tape and the battery cell, thereby replacing the welding process of the soldering tape and the battery cell in the prior art, solving the technical problems of complex welding equipment and process, and achieving the technical effect of simplifying the processing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the gluing process described in this application;

[0025] Figure 2 is a schematic diagram of the battery cell described in this application;

[0026] Figure 3 is a schematic diagram of the grid lines of the battery cell described in this application;

[0027] Figure 4 yes Figure 3 A magnified view of middle;

[0028] Figure 5 It is a structural schematic diagram of the glue pool of the glue coating equipment described in this application;

[0029] Figure 6 is a schematic diagram of the glue coating device described in the present application;

[0030] Figure 7 is a cross-sectional view of the glue coating device described in the present application;

[0031] Figure 8 It is a schematic diagram of the first transfer piece in the glue coating device described in this application;

[0032] Figure 9-11It is a schematic diagram of the second transfer piece in the gluing equipment described in this application.

[0033] Explanation of the reference numerals: 100, battery cell; 110, grid line; 120, glue coating area; 130, glue film; 200, glue pool; 210, tank body; 220, opening; 230, scraper; 300, carrier; 310, base; 320, transfer member; 321, convex strip; 3211, transfer portion; 322, wire body; 3221, wire mesh; 400, battery holder; 410, bearing surface. DETAILED DESCRIPTION

[0034] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of this application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0035] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] The present application provides a glue coating process, glue coating equipment and battery cell 100 processing technology, which solves the technical problems of complex welding equipment and processes and achieves the technical effect of simplifying the processing technology.

[0037] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0038] The present application provides a glue coating process, which is applied to the battery cell 100 so that the battery cell 100 can be bonded to the solder strip through the glue. Figure 1As shown, the glue coating process includes: presetting a glue coating area 120 on the battery cell 100, the glue coating area 120 corresponds to the electrode of the battery cell 100; providing a colloid, the colloid is conductive, making the colloid a fluid, and making the colloid spread along the glue coating area 120 to form a glue film 130; making the glue film 130 solid.

[0039] like Figure 2-4 As shown, a glue coating area 120 is preset on the battery cell 100. It can be understood that the glue coating area 120 refers to the position where the glue needs to be laid out. The setting of the glue coating area 120 serves the layout of the glue, so that the glue can be laid out more accurately. In other words, the glue coating area 120 is based on the electrode layout of the battery cell 100, and the electrode refers to the grid line 110 of the battery cell 100. The glue coating area 120 is set in a one-to-one correspondence with the grid line 110. In this way, after the layout of the glue is completed, the grid line 110, the glue, and the welding strip on the battery cell 100 can be made to correspond to each other, so as to improve the connection strength between the battery cell 100 and the welding strip; in one embodiment, the grid lines 110 of the battery cell 100 are formed in parallel in multiple groups. Specifically, the multiple groups of grid lines 110 are kept parallel and arranged at equal intervals. Therefore, the glue coating area 120 is arranged as a straight line, and the glue coating area 120 is also set as multiple groups and arranged in parallel at equal intervals. In other words, the number of glue coating areas 120 is consistent with the number of grid lines 110 and corresponds one to one.

[0040] It can be understood that the glue coating area 120 can be a physical concept or a virtual concept. For example, when the colloid is laid out by screen printing or the like, it is first necessary to lay a screen pattern on the battery cell 100, and the pattern to be printed is the glue coating area 120 of the colloid, that is, a physical concept; when the colloid is laid out by spraying, 3D printing or transfer, the glue coating area 120 is formed by computer calculation control or through the shape of the transfer piece 320, that is, a virtual concept.

[0041] Regarding the selection of colloid, the provided colloid is viscous and conductive, so that after the battery cell 100 and the soldering strip are bonded by the colloid, the soldering strip and the battery cell 100 are conductive. Specifically, the main body of the colloid is a resin, so that the colloid is viscous. In one embodiment, a hot-melt resin or a thermosetting resin can be used, for example, one or more combinations of EVA, water-based polyurethane, phenoxy resin, epoxy resin, phenolic resin, rubber and other materials; conductive fillers are added on the basis of the resin to make the colloid conductive. In one embodiment, the conductive fillers can be metal powders or inorganic non-metallic powders. For example, the metal powders are one or more combinations of silver, copper, aluminum, nickel, silver-coated copper, silver-coated aluminum, silver-coated nickel, nickel-coated copper or nickel-coated aluminum; the inorganic non-metallic powders are one or more combinations of graphite, graphene, zinc oxide, tin oxide and other materials; the shape of the conductive filler can be spherical, flake or dendrite, and the particle size is 100nm to 50μm, preferably 200nm to 20μm.

[0042] It is worth noting that the colloid itself is viscous. Before the colloid is laid, the colloid needs to be made into a fluid so that the colloid can flow. The fluid colloid is conducive to being laid along the preset glue coating area 120, thereby improving the laying efficiency and effect. After the colloid is laid along the preset glue coating area 120, the colloid is made solid so that the colloid forms a glue film 130 on the battery cell 100. The glue film 130 is not sticky or has low viscosity, thereby preventing the battery cell 100 from bonding to other structures during loading or transportation. In this way, the glue coating process of the colloid on the battery cell 100 is completed.

[0043] The colloid can be arranged in one or more of the following ways: the colloid is screen-printed on the battery cell 100 along the glue-coated area 120 to form a glue film 130; the colloid is printed using the basic principle that the mesh of the graphic part of the screen printing plate is permeable to the slurry (colloid), and the mesh of the non-graphic part is not permeable to the slurry (colloid), and the colloid is transferred to the battery cell 100 through the mesh of the graphic part by squeezing the scraper during printing to form the glue film 130 of the glue-coated area 120. The colloid is 3D-printed on the battery cell 100 along the glue-coated area 120 to form the glue film 130; the colloid material is deposited layer by layer on the battery cell 100 through computer control to form a three-dimensional glue film 130 of the glue-coated area 120. The colloid is sprayed on the battery cell 100 along the glue-coated area 120 to form the glue film 130. The colloid is sprayed onto the battery cell 100 in a mist form by using a spray gun or a nozzle, and the glue film 130 on the glue coating area 120 is formed by controlling the moving path and spraying amount of the spray gun.

[0044] Alternatively, the colloid is transferred onto the battery cell 100 along the glue coating area 120 to form the glue film 130; the colloid is first placed on the transfer member 320, and then the colloid on the transfer member 320 is transferred onto the battery cell 100 by embossing or the like. Specifically, a carrier 300 is provided, the carrier 300 has a transfer member 320, the transfer members 320 are arranged in a straight line, the transfer members 320 are provided in multiple groups and arranged in parallel, and the transfer members 320 are arranged correspondingly to the glue coating area 120; the transfer member 320 is dipped with the colloid; the carrier 300 and the battery cell 100 are brought close to each other so that the transfer member 320 and the glue coating area 120 are in contact with each other.

[0045] Furthermore, the width of the adhesive film 130 is less than or equal to the width of the welding tape. After the adhesive film 130 is heated and melted, the welding tape is placed on the adhesive film 130. Since the welding tape exerts a certain pressure on the battery cell 100 or the adhesive film 130, the welding tape can squeeze the adhesive film 130 to both sides so that the colloid in the middle can flow to both sides. Controlling the width of the adhesive film 130 to be less than or equal to the width of the welding tape is beneficial to reducing the quality problems of the battery cell 100 caused by the flow of the colloid, and reduces the cost of the colloid usage.

[0046] It should be noted that regarding the phase change of the colloid: in order to improve the fluidity of the colloid, before the colloid is laid, the colloid needs to be a fluid (the colloid itself is a fluid or is converted into a fluid through a process); after the colloid is laid along the glue coating area 120, the colloid is converted into a solid, and at this time the colloid has no viscosity or has a low viscosity; when it is necessary to connect the battery cell 100 and the welding ribbon, the colloid is converted from a solid to a fluid again to make the colloid viscous; after the welding ribbon is laid, the colloid is converted from a fluid to a solid again, that is, the colloid has at least the phase change characteristics of fluid→solid→fluid→solid, wherein, after the last phase change of liquid→solid is completed, as the temperature rises, the colloid cannot undergo a phase change again, the cross-linking and curing reaction is completed, and it can withstand high temperatures.

[0047] Furthermore, after the colloid is arranged along the preset glue coating area 120, the colloid is heated at a temperature T1 to change the colloid from a fluid state to a solid, thereby forming a glue film 130, which has no viscosity or low viscosity; when the solder strip and the battery cell 100 need to be bonded, the colloid is heated at a temperature T2 to change the colloid from a solid to a fluid, so that the colloid regains viscosity and the battery cell 100 and the solder strip are bonded; wherein the temperature range of T1 is 10 to 140°C, preferably 20 to 100°C; the temperature range of T2 is 50 to 150°C, preferably 60 to 140°C, wherein T1 is less than T2. ​​Regarding the last phase change process of the colloid, the process can be adjusted based on the selection of the colloid. For example, if the colloid can be cured by returning to room temperature, heating is not required; if the colloid needs to be heated to complete the phase change, the colloid needs to be heated again for curing. After the adhesive film 130 is formed on the battery cell 100, the colloid can be heated while the soldering tape is laid to restore the viscosity of the colloid; or the colloid can be heated first and then the soldering tape is laid; or the soldering tape can be laid first and then the colloid can be heated.

[0048] The present application also provides a glue coating device, such as Figure 5-11 As shown, it is used for applying glue on the battery cell 100. The battery cell 100 has a linear glue application area 120. The glue application area 120 is arranged in multiple groups. The multiple groups of glue application areas 120 are kept parallel and arranged at equal intervals. The glue application equipment in this embodiment is suitable for the above-mentioned glue application method. The glue application equipment includes: a glue pool 200 and a carrier 300. The glue pool 200 is used to store colloid; the carrier 300 has a transfer part 320, which is used to dip the colloid in the glue pool 200 and transfer the colloid to the battery cell 100, and conforms to the glue application area 120 on the battery cell 100.

[0049] Glue tank 200, such as Figure 5As shown, the glue pool 200 is used for storing glue. The glue pool 200 is used in conjunction with the transfer member 320. Specifically, the glue pool 200 has a groove 210, the groove 210 is used to accommodate the colloid, and the transfer member 320 enters the groove 210 to dip the colloid, so that the transfer member 320 has the colloid; wherein the groove 210 has an opening 220, and the opening 220 means that the transfer member 320 can enter and exit the groove 210 through the opening 220 to dip the colloid, and the position of the opening 220 is located on the third plane; the glue pool 200 also includes a scraper 230, the scraper 230 is used to scrape the glue, and the scraper 230 has a degree of freedom of movement, so that the scraper 230 can scrape the opening 220 along the length direction or width direction of the groove 210. In other words, under the action of the scraper 230, the part of the colloid that overflows or is higher than the opening 220 of the groove 210 can be scraped away to ensure that the top of the colloid is located on the third plane. Among them, the depth of the groove body 210 is relatively shallow, and should satisfy: the depth of the groove body 210 is less than the thickness of the transfer piece 320, so that the transfer piece 320 can only partially enter the groove body 210 to contact the colloid, rather than the entire transfer piece 320 being immersed in the colloid, thereby preventing the transfer glue from taking too much colloid and causing the colloid on the adjacent transfer piece 320 to stick together, which is beneficial to improving the transfer accuracy and effect.

[0050] Carrier 300, such as Figure 6-8 As shown, the carrier 300 is used to dip the colloid in the glue pool 200 and transfer the colloid to the battery cell 100. The carrier 300 includes a base 310 and a transfer member 320, the transfer member 320 is connected to the base 310, and the transfer member 320 is arranged corresponding to the glue coating area 120, that is, the transfer member 320 corresponds to the glue coating area 120 one by one, so that the transfer member 320 can transfer the colloid to the glue coating area 120 on the battery cell 100. By designing the shape of the transfer member 320, the glue coating area 120 under different process requirements can be satisfied.

[0051] In one embodiment, Figure 7 , 8 As shown, the transfer member 320 is a convex strip 321, and the convex strip 321 has a plurality of groups, and the plurality of groups of convex strips 321 are arranged corresponding to the glue coating area 120, that is, the convex strips 321 are parallel to each other and are equidistant, and the end of the convex strip 321 has a transfer portion 3211, and the transfer portion 3211 is used to cooperate with the glue pool 200, that is, the transfer portion 3211 is used to dip the colloid, and the colloid is transferred to the glue coating area 120 through the contact between the convex strip 321 and the battery cell 100; further, the transfer portion 3211 is located in the same plane, which is defined as the first plane, so that when the transfer portion 3211 is transferring, each transfer portion 3211 can maintain contact with the battery cell 100, thereby improving the accuracy of the colloid transfer.

[0052] Further, such as Figure 7As shown, it also includes a battery holder 400, which is used to carry the battery cell 100; the battery holder 400 is movable relative to the transfer member 320, and a carrying surface 410 is provided on the battery cell 100, and the carrying surface 410 is used to fix the battery cell 100, and the fixing method can be adsorption, bonding, etc., so that the battery cell 100 is fixed on the carrying surface 410, and at least one of the battery holder 400 and the carrier 300 is movable to drive the transfer member 320 and the battery cell 100 to approach each other, so that the battery cell 100 and the transfer member 320 dipped with the colloid are in contact, thereby completing the transfer of the colloid. Further, the carrying surface 410 is set as a plane, and the plane is defined as a second plane, and the second plane and the first plane are kept parallel, so that the battery cell 100 and the plane where the transfer part 3211 is located are set in parallel, so as to improve the transfer effect of the colloid between the transfer part 3211 and the battery cell 100, and ensure that each transfer part 3211 can contact the battery cell 100.

[0053] In the second embodiment, if Figure 9-11 As shown, the transfer member 320 is a wire body 322, and the base 310 has at least two groups. The wire body 322 is connected between the bases 310 to form a wire mesh 3221. The wire mesh 3221 is used to cooperate with the glue coating area 120 to transfer the colloid to the glue coating area 120. Further, the base 310 is set to two groups, and the wire body 322 is connected between the two bases 310 in the form of winding, thereby forming an upper and lower wire mesh 3221. One of the wire meshes 3221 can be selected as the working wire mesh 3221, or both can be used as the working wire mesh 3221, that is, the upper and lower wire meshes 3221 can cooperate with the battery cell 100 to transfer the colloid.

[0054] Further, such as Fig.10 , 11 As shown, it also includes a battery holder 400, which is used to carry the battery cell 100; the battery holder 400 is movable relative to the transfer member 320, and a carrying surface 410 is provided on the battery cell 100, and the carrying surface 410 is used to fix the battery cell 100, and the fixing method can be adsorption, bonding, etc., so that the battery cell 100 is fixed on the carrying surface 410, and at least one of the battery holder 400 and the carrier 300 is movable to drive the transfer member 320 and the battery cell 100 to approach each other, so that the battery cell 100 and the transfer member 320 dipped with the colloid are in contact, thereby completing the transfer of the colloid. Further, the carrying surface 410 is set as a plane, and the plane is defined as a second plane, and the second plane and the first plane are kept parallel, so that the battery cell 100 and the plane where the transfer part 3211 is located are set in parallel, so as to improve the transfer effect of the colloid between the transfer part 3211 and the battery cell 100, and ensure that each transfer part 3211 can contact the battery cell 100.

[0055] Alternatively, the supporting surface 410 is an outwardly convex curved surface, and the battery cell 100 fixed on the curved surface also maintains an arc-shaped state. By bringing the battery holder 400 and the wire mesh 3221 close to each other, since the wire mesh 3221 has a certain tension, the curved supporting surface 410 pushes the wire mesh 3221 inward to deform and recess the wire mesh 3221. In this way, the inner wire mesh 3221 fits the battery cell 100 located on the supporting surface 410, which is beneficial to improving the contact between the battery cell 100 and the transfer member 320. At the same time, since the first plane and the second plane are parallel to each other with a high precision, such an arrangement can reduce the positional accuracy requirements between the transfer member 320 and the battery cell 100.

[0056] The present application also proposes a battery cell 100 processing process, which is applicable to the battery cell 100 obtained after the above-mentioned glue coating method, including: heating the battery cell 100 to change the glue film 130 on the battery cell 100 from solid to fluid, that is, the colloid regains its viscosity, and the welding strip is arranged corresponding to the glue coating area 120, so that the welding strip is firmly bonded to the battery cell 100, and then the colloid is solidified to complete the welding strip processing on the battery cell 100. The colloid can be heated and heated while the welding strip is being arranged to restore the viscosity of the colloid; or the colloid can be heated and heated first, and then the welding strip is arranged; or the welding strip is arranged first, and then the colloid is heated and heated.

[0057] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0058] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A gluing process, characterized in that: Applicable to a battery cell (100), comprising: A glue coating area (120) is preset, the glue coating area (120) is located on the battery cell (100), and the glue coating area (120) corresponds to the electrode arrangement of the battery cell (100); Providing a colloid, wherein the colloid is conductive; The colloid is made into a fluid, and the colloid is arranged along the glue coating area (120) to form a glue film (130); The adhesive film (130) is made solid.

2. A gluing process according to claim 1, characterized in that: The glue coating areas are arranged in a straight line, the glue coating areas are provided in multiple groups, and the glue coating areas are parallel to each other and are arranged at equal intervals.

3. A gluing process according to claim 1, characterized in that: The adhesive film (130) is used for bonding with the welding strip, and the width of the adhesive film (130) is less than or equal to the width of the welding strip.

4. A gluing process according to claim 1, characterized in that: The “the colloid is arranged along the glue coating area (120) to form a glue film (130)” includes: Forming the adhesive film (130) on the battery sheet (100) by screen printing; or Forming the adhesive film (130) by transfer printing onto the battery sheet (100); or Forming the adhesive film (130) on the battery sheet (100) by 3D printing; or The adhesive film (130) is formed by spraying on the battery sheet (100).

5. A gluing process according to claim 4, characterized in that: The step of “forming the adhesive film (130) by transferring onto the battery sheet (100)” includes: A carrier (300) is provided, wherein the carrier (300) has a transfer member (320), wherein the transfer members (320) are arranged in a straight line, wherein a plurality of groups of the transfer members (320) are arranged in parallel, and wherein the transfer members (320) are arranged corresponding to the glue coating area (120); The transfer piece (320) is provided with the colloid; The carrier (300) and the battery sheet (100) are brought close to each other so that the transfer member (320) and the glue coating area (120) are in corresponding contact.

6. A glue coating device, characterized in that: Used for gluing a battery cell (100), the battery cell (100) having a gluing area (120), the gluing area (120) being arranged corresponding to an electrode of the battery cell (100), the gluing area (120) being arranged in a straight line, the gluing area (120) being arranged in a plurality of groups and arranged in parallel, the gluing device comprising: A glue pool (200), wherein the glue pool (200) is used for storing glue; A carrier (300), the carrier (300) comprising: Base (310); A transfer member (320) is connected to the base (310), and the transfer member (320) has a plurality of groups arranged corresponding to the glue coating area (120), so that the colloid on the transfer member (320) can be transferred to the glue coating area (120).

7. The gluing device according to claim 6, characterized in that: The transfer member (320) is a convex strip (321), and the convex strip (321) has a transfer portion (3211), and the plurality of transfer portions (3211) are used to dip into the colloid so as to transfer the colloid onto the glue coating area (120), and the plurality of transfer portions (3211) are located in the first plane; or The transfer member (320) is a wire mesh (3221), the base (310) has at least two groups, the wire mesh (3221) is connected between the bases (310), and the wire mesh (3221) is used to dip in colloid so that the colloid is transferred to the glue coating area (120).

8. The gluing device according to claim 7, characterized in that: When the transfer member (320) is a convex strip, the glue coating device further comprises: A battery seat (400), wherein the battery seat (400) is movable relative to the transfer member (320), and the battery seat (400) has a carrying surface (410), wherein the carrying surface (410) is used to carry the battery sheet (100), and wherein the carrying surface (410) is located in a second plane, and the second plane is parallel to the first plane.

9. The gluing device according to claim 7, characterized in that: When the transfer member (320) is a wire mesh (3221), the glue coating device further comprises: A battery seat (400), wherein the battery seat (400) is movable relative to the transfer member (320), and the battery seat (400) has a bearing surface (410), wherein the bearing surface (410) is used to bear the battery sheet (100), and the bearing surface (410) is configured as a plane or a convex arc surface.

10. The gluing device according to claim 5, characterized in that: The glue pool (200) has a groove (210) for accommodating the glue, and at least a portion of the transfer member (320) can enter the groove (210) to contact the glue, wherein the depth of the groove (210) is less than the thickness of the transfer member (320).

11. The gluing device according to claim 10, characterized in that: The tank body (210) has an opening (220), and the glue pool (200) further comprises: A scraper (230) is used for scraping glue, and the scraper (230) has a degree of freedom of movement so that the scraper (230) can scrape the glue flat relative to the opening (220).

12. A battery cell processing process, characterized in that: include: After the battery cell (100) is coated with glue using the coating process described in any one of claims 1 to 5, the glue film (130) becomes sticky enough to bond the solder strip.

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